Boat propeller shield



FIG. 1 is a rear, top and left side perspective view of a boat propeller shield showing our new design;

FIG. 2 is a fragmentary enlarged rear and bottom perspective view thereof, the cowling is omitted for convenience of illustration; and

FIG. 3 is a fragmentary top, front and right side perspective view thereof, the lower portion of cowling is shown broken away for convenience of illustration. 

The ornamental design for a boat propeller shield, as shown and described. 